2007-08-09 03:09:25 · 3 answers · asked by jackson 2 in Science & Mathematics ➔ Chemistry
Many many turns of wire around a high-permeability core such as nickel-iron, and a heavy-enough AC source to warm up the wire. For max efficiency, the inductance needs to be high enough such that it represents a much higher impedance to the frequency of the AC source than the resistance of the wire.
Much stronger field could be generated if you used superconducting tin-niobium wire, but the wire would have to be maintained in a thermos of liquid helium, which you would keep cool by placing inside of another thermos of liquid nitrogen. Fields in the 1-40 Tesla range can be created this way.
If this is a project, email me for more info.
2007-08-09 03:15:07 · answer #1 · answered by Gary H 6 · 1⤊ 0⤋
A strong electromagnet which can set up a varying Magnetic field.
2007-08-09 03:15:03 · answer #2 · answered by ag_iitkgp 7 · 0⤊ 0⤋
a large amount of chare flowing in closed loops(circles) .more the winding more the field
2007-08-09 03:20:00 · answer #3 · answered by sujay d 1 · 0⤊ 0⤋